<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="myjQuery.js"></script>

</head>
<body>
<ul>
    <li class="fruit">Apple</li>
    <li>Tomato</li>
    <li class="fruit">Banana</li>
    <li>Potato</li>
</ul>
<script type="text/javascript">
    var s = ' ass '
    var s2 =  $.trim(s);
    $('li').html('php')
    console.log(s2)
    $.html()
</script>

</body>
</html>